MOTION VECTOR DETECTOR AND MOTION VECTOR DETECTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a motion vector detector and a motion vector detecting method which can detect a motion vector accurately while reducing an amount of processing.

SOLUTION: A dynamic picture image encoding device 100 comprises an image reducing portion 1 for creating an image to be reduced and encoded and a reference image for reduction; region dividing portion 3 for dividing the image to be reduced and encoded into a plurality of regions; regional motion vector detecting portion 4 for detecting a regional motion vector with respect to the reference image for reduction for each region; degree-of-correlation calculating portion 5 for calculating a degree of correlation between the regional motion vectors for each region; scope-of-search determining portion 6 for determining the information about a scope of motion vector search based on the regional motion vector and the degree of correlation; encoding portion 7 having a motion detecting portion for detecting the motion vector using the information about the scope of motion vector search; and analyzing portion 8 for determining the number of regions into which a next image to be reduced and encoded is divided based on the actually detected motion vector, already detected regional motion vector, and degree of correlation.

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